JPH03143597A - Defoaming method for sewage treating tank - Google Patents
Defoaming method for sewage treating tankInfo
- Publication number
- JPH03143597A JPH03143597A JP1325305A JP32530589A JPH03143597A JP H03143597 A JPH03143597 A JP H03143597A JP 1325305 A JP1325305 A JP 1325305A JP 32530589 A JP32530589 A JP 32530589A JP H03143597 A JPH03143597 A JP H03143597A
- Authority
- JP
- Japan
- Prior art keywords
- sewage
- sewage treatment
- treatment tank
- filter bed
- treating tank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000010865 sewage Substances 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims description 14
- 239000006260 foam Substances 0.000 claims abstract description 12
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 11
- 238000005273 aeration Methods 0.000 claims abstract description 6
- 238000007664 blowing Methods 0.000 claims abstract description 4
- 230000005484 gravity Effects 0.000 claims description 5
- 238000005187 foaming Methods 0.000 claims 1
- 239000010802 sludge Substances 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 3
- 244000005700 microbiome Species 0.000 abstract description 3
- 238000000354 decomposition reaction Methods 0.000 abstract description 2
- 238000004140 cleaning Methods 0.000 abstract 3
- 238000009434 installation Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 239000000463 material Substances 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- 238000000746 purification Methods 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 235000011511 Diospyros Nutrition 0.000 description 1
- 244000236655 Diospyros kaki Species 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- -1 empty cans Polymers 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Biological Treatment Of Waste Water (AREA)
- Degasification And Air Bubble Elimination (AREA)
- Removal Of Floating Material (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は汚水処理槽内に発生ずる泡の消泡方法に関し、
特に浮上接触濾材を用いたバッキ処理施設に用いる消泡
方法に関する。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a method for defoaming foam generated in a sewage treatment tank.
In particular, the present invention relates to a defoaming method used in bag processing facilities using floating contact filter media.
（従来の技術）
バッキによって汚水を処理する施設は既に多々知られて
おり、これらの中でも特に、浮上接触濾材を用いる方法
は微生物による浄化作用をも利用するものであり優れて
いる（例えば特公昭４７４４９５３号及び同６３−１１
９号）。(Prior art) Many facilities that treat wastewater using bags are already known, and among these, the method using floating contact filter media is particularly excellent because it also utilizes the purifying action of microorganisms (for example, No. 4744953 and No. 63-11
No. 9).
一方、従来から汚水のバッキ処理施設において発生する
泡の除去方法としては、汚水処理槽の水面付近に開口せ
しめた気液吸込管により、発生した泡を吸引し除去する
方法又は、汚水処理槽の水面上に散水装置を配して水面
に散水を行うことにより泡を消泡する方法によっていた
。しかしながら前者の方法は泡を移動させるのみである
ので木質的な解決策とはならず、結局消泡処理施設を別
途必要とするという不都合がある一方、後者の方法では
、気泡の大きな泡に対しては効果があるものの気泡の小
さな泡に対しては効果が少なく、完全に消泡を行うこと
は困雑である上維持管理費が高くつくという欠点があっ
た。On the other hand, conventional methods for removing bubbles generated in sewage treatment facilities include sucking and removing the bubbles using a gas-liquid suction pipe opened near the water surface of the sewage treatment tank, or The method used was to dispose of foam by placing a water sprinkler on the water surface and spraying water on the water surface. However, since the former method only moves the bubbles, it is not a wood-based solution and ultimately requires a separate anti-foam treatment facility. Although it is effective against small bubbles, it is difficult to completely eliminate foam, and maintenance costs are high.
（発明が解決しようとする課題、）
本発明者等は上記の欠点を解決すべく鋭意検討を重ねた
結果、浮上接触濾材からなる濾床上に不織布を載置する
ことにより、特にその他の消泡装置を用いなくてもバッ
キ槽内で発生する大小の泡を容易に消泡するこ牛ができ
ることを見出し本発明に到達した。(Problems to be Solved by the Invention) As a result of intensive studies in order to solve the above-mentioned drawbacks, the present inventors have found that, by placing a nonwoven fabric on a filter bed made of a floating contact filter medium, it is possible to The inventors have discovered that it is possible to easily eliminate large and small bubbles generated in a bag tank without using any equipment, and have thus arrived at the present invention.
従って、本発明の目的は設置及び維持管理が容易で、特
にバッキ槽に対して有効な消泡方法を提供することにあ
る。Therefore, an object of the present invention is to provide a defoaming method that is easy to install and maintain, and is particularly effective for buck tanks.
（ｉ！Ｉ！題を解決するための手段）
末完り１の上記の目的は、汚水処理槽内に比重１以下の
浮上接触濾材からなる濾床を形成せしめると共に該濾床
上に不織布を載置し、汚水処理槽内に配置せしめた散気
装置を通して、汚水処理槽底部から空気を吹き込むこと
により汚水面上に発生する泡を消去することを特徴とす
る汚水処理槽の泡の消泡方法により達成された。(Means for Solving the i!I! Problem) The above objective of End 1 is to form a filter bed made of a floating contact filter medium with a specific gravity of 1 or less in a sewage treatment tank, and to place a nonwoven fabric on the filter bed. A method for defoaming foam in a sewage treatment tank, which comprises blowing air from the bottom of the sewage treatment tank through an air diffuser placed in the sewage treatment tank to eliminate foam generated on the surface of the sewage water. achieved by.
以下本発明を実施例に基づいて詳しく説明する。The present invention will be described in detail below based on examples.
第１図は、本発明の汚水処理槽の泡の消泡方法を示す断
面図である。FIG. 1 is a sectional view showing the method for defoaming foam in a sewage treatment tank according to the present invention.
図中、符号（１）は汚水処理槽（３）の汚水面に形成せ
しめた濾床であり、比重１以下の浮上接触濾材（２）に
より形成せしめる。本発明においては、浮上接触濾材（
２）として、例えば比重１以下の合成樹脂、空かん、プ
ラスチック成型品、カキガラ、木片等を適当な大きさに
破砕にしたもの及び、これらの適当量をアミの中に収容
し比重を０．９前後としたものの中から適宜選択して使
用することができる。In the figure, reference numeral (1) is a filter bed formed on the sewage surface of the sewage treatment tank (3), and is formed by a floating contact filter material (2) having a specific gravity of 1 or less. In the present invention, a floating contact filter medium (
2) For example, synthetic resins, empty cans, plastic molded products, persimmon shells, wood chips, etc., which have a specific gravity of 1 or less, are crushed into appropriate sizes, and an appropriate amount of these is housed in a cage with a specific gravity of 0. Appropriate selections can be made from around 9.
符号（４）は浮上接触濾材（２）からなる濾床（１）上
に載置せしめた不織布である。本発明に使用する不織布
（４）は公知の材料の中から適宜選択して使用すること
ができる。Reference numeral (4) is a nonwoven fabric placed on a filter bed (1) made of a floating contact filter medium (2). The nonwoven fabric (4) used in the present invention can be appropriately selected from known materials.
符号（５）は散気装置である。散気装置（５）は、汚水
中に酸素を供給することにより、汚水を好気性にし浄化
する。この場合、散気に際する空気の量、速度又は角度
等を３１Ｅ＋整して、浮上接触濾材（２）を図示の如く
汚水処理槽の片側に収斂せしめた場合には、散気装置（
５）を設けた部分に解放水面を形成せしめることかで・
きるので維持管理作業を良好なものとすることがてきる
。Code (5) is an aeration device. The air diffuser (5) purifies the wastewater by making it aerobic by supplying oxygen to the wastewater. In this case, if the amount, speed, angle, etc. of air during aeration are adjusted to 31E+ and the floating contact filter material (2) is converged on one side of the sewage treatment tank as shown in the figure, the aeration device (
5) By forming an open water surface in the area where
This allows for better maintenance and management work.
（作 用）
汚水や汚泥が分解されて生じた有機物等は、浮上接触濾
材（２）の表面に付着し、汚水や汚泥の浄化に有効な微
生物等が繁殖するので、浄化の効率は極めて良好となる
。又、浄化に際して発生する分解ガスや散気した空気に
よって発生する泡は、不織布中を通過する間に容易に消
泡される。(Function) Organic matter generated by the decomposition of sewage and sludge adheres to the surface of the floating contact filter medium (2), and microorganisms effective in purifying sewage and sludge propagate, resulting in extremely high purification efficiency. becomes. In addition, bubbles generated by decomposed gas and diffused air generated during purification are easily defoamed while passing through the nonwoven fabric.
〈発明の効果）
以上詳述した如く、本発明の汚水処理槽の泡の消泡方法
は浮上接触濾材上に不織布を載置するのみであるので、
従来の汚水処理方法において使用していた消泡方法より
も安価且つ、設置及び維持管理が極めて容易である。<Effects of the Invention> As detailed above, since the method for defoaming foam in a sewage treatment tank of the present invention only involves placing a nonwoven fabric on a floating contact filter medium,
It is cheaper than defoaming methods used in conventional wastewater treatment methods, and is extremely easy to install and maintain.
第１図は本発明の汚水処理槽の泡の消泡方法をしめる断
面図である。
１・・・・濾床
２・・・・浮上接触濾材
３・・・・汚水処理槽
・不織布
・散気装置FIG. 1 is a sectional view showing the method for defoaming foam in a sewage treatment tank according to the present invention. 1...Filter bed 2...Floating contact filter medium 3...Sewage treatment tank, non-woven fabric, air diffuser
Claims (1)
濾床を形成せしめると共に該濾床上に不織布を載置し、
汚水処理槽内に配置せしめた散気装置を通して、汚水処
理槽底部から空気を吹き込むことにより汚水面上に発生
する泡を消去することを特徴とする汚水処理槽の泡の消
泡方法。 ２）汚水処理槽内の汚水を還流せしめ、以って浮上接触
濾材を汚水処理槽の一方の壁に収斂せしめる如く空気を
吹き込む、特許請求の範囲第１項に記載の汚水処理槽の
泡の消泡方法。[Claims] 1) Forming a filter bed made of a floating contact filter medium with a specific gravity of 1 or less in a sewage treatment tank, and placing a nonwoven fabric on the filter bed,
A method for defoaming foam in a sewage treatment tank, which comprises blowing air from the bottom of the sewage treatment tank through an aeration device placed in the sewage treatment tank to eliminate foam generated on the surface of the sewage treatment tank. 2) Foaming in a sewage treatment tank according to claim 1, which causes the sewage in the sewage treatment tank to flow back, thereby blowing air so as to cause the floating contact filter medium to converge on one wall of the sewage treatment tank. Defoaming method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1325305A JPH03143597A (en) | 1989-12-15 | 1989-12-15 | Defoaming method for sewage treating tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1325305A JPH03143597A (en) | 1989-12-15 | 1989-12-15 | Defoaming method for sewage treating tank |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8224881A Division JPS57197089A (en) | 1981-05-29 | 1981-05-29 | Purification of sewage by utilizing natural ecosystem stnthetically in specific water level |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03143597A true JPH03143597A (en) | 1991-06-19 |
| JPH0369595B2 JPH0369595B2 (en) | 1991-11-01 |
Family
ID=18175335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1325305A Granted JPH03143597A (en) | 1989-12-15 | 1989-12-15 | Defoaming method for sewage treating tank |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03143597A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011194368A (en) * | 2010-03-23 | 2011-10-06 | Chugoku Electric Power Co Inc:The | Nitrification tank and wastewater treatment system |
-
1989
- 1989-12-15 JP JP1325305A patent/JPH03143597A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011194368A (en) * | 2010-03-23 | 2011-10-06 | Chugoku Electric Power Co Inc:The | Nitrification tank and wastewater treatment system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0369595B2 (en) | 1991-11-01 |
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